Which statement is the best example of the law of conservation of energy? A.
A train traveling down a hill loses potential energy that is then stored in the ground.

B.
An animal's energy is permanently stored in chemical bonds when it eats food.

C.
Chemical energy in a car engine is destroyed as it burns and releases exhaust into the air.

D.
Radiant energy from the Sun is not lost but transformed into other forms of energy.